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From "Todd Lipcon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-2820) Add a simple sanity check for HA config
Date Mon, 23 Jan 2012 21:51:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HDFS-2820.
-------------------------------

       Resolution: Fixed
    Fix Version/s: HA branch (HDFS-1623)
     Hadoop Flags: Reviewed

Committed to branch, thanks Eli.
                
> Add a simple sanity check for HA config
> ---------------------------------------
>
>                 Key: HDFS-2820
>                 URL: https://issues.apache.org/jira/browse/HDFS-2820
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Trivial
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: hdfs-2820.txt
>
>
> If the user configures a shared edits dir, but doesn't configure the namenode addresses
correctly, the NN will fail to start up in a very strange way.
> I had this misconfiguration in one of my test clusters which was difficult to debug,
even though I'm very familiar with the code. This patch is to add a simple sanity check so
that if a user has the same misconfiguration, it will fail to start and given a more informative
dump.

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